Lock



y 1930. A. REBORI 7 1,758,620

I LOOK Filed June 15, 1925 2 Sheets-sheet 1 A T'TORNEYS.

A. RBom May 13, 1930.

LOCK

Filed Jime 15, 1925 2 Sheets-Sheet INVENTOR.

ATTORNEYS.

Patented May 13, 1930 5 OFFICE ATILIO REBORI, OF BUENOS AIRES, ARGENTINALOCK Application filed June 15, 1925, Serial No. 37,319, and inArgentina April 30, 1925.

The present invention relates to improvements in looks, and has for itsobject to provide a device of this character which is more efiicient andpractical than those at present in use.

Known types of locks employ a fiat type of key with or without guidinggrooves which is adapted for insertion in a cylinder provided withsections of pin tumblers which, when engaging in the grooves of the key,are so disposed as to permit rotation of the cylinder, but which, uponthe removal of the key, is displaced so as to lock the cylinder againstrotation. In such types of locks the key is ordinarily utilized torotate the cylinder and to actuate the bolt or other part of the lock.

The present invention relates to improvements in looks of this generaltype, and consists essentially in that the tumblers serve only to lockor release the bolt in its sliding movement, the movement of the boltbeing effected by means of a handle. By this ar- 1 rangement it ispossible to obtain a more efficient lock than heretofore, and moreoverthe arrangement is such as to permit the 111- 'ternal parts of the lockbeing so concealed and protected as to prevent unauthorized tamperingtherewith. By the use of means other than the key for actuating thebolt, it

is possible to manufacture a key of considerably thinner material thanthat heretofore employed for looks of the type in which the key isemployed for releasing the bolt.

A further object of the invention is the provision of a lock permittingthe introduction of the key from either side so that in the event thelock is applied to the door of an apartment, for instance, the lock boltmay be retracted by means of the key either from the interior orexterior of the apartment. A further object is the provision of a lockprovided with a plurality of independent groups or sets of pin tumblersnecessitating the use of a corresponding number of keys in order toefi'ect the release and consequent retraction of the bolt.

In the accompanying drawing, wherein an approved embodiment of theinvention is illustrated, Fig. 1 is an elevation of the improved lock, apart of the casing being removed to more clearly show the internalparts.

FFig. 2 is a section on the line AA of Fig. 3 is a detail section on theline BB of Fig. 2 showing the key removed.

Fig. 4 is a detail section similar to Fig. 3 showing the key inserted.

Fig.:5 is a view of a modification of the invention, a part of the lockcasing being re moved.

Fig. 6 is a section on line CC of Fig. 5.

Fig. 7 is an elevation of a modified type of key employed in the form oflock illustrated in Figs. 5 and 6.

Referring to the drawing in detail the numeral 1 indicates the casing ofthe lock including a top wall 2 and internal raised portion 3constituting a guide and coacting with the top wall 2 to confine andguide the sliding andnon-rotatable bolt 4.

The bolt is adapted, when projected, to extend from one end of thecasing 1, while the guide 3 terminates inwardly of the oppositeextremity of the latter to provide adequate space for a shaft 6 carryinga handle 5 at one end located externallyof the casing and provided,within the casing, with a crank arm 7 movable in a transverse slot 8formed in the adjacent extremity of the bolt 4, whereby incident tooscillation-of the shaft 6 the bolt 4 is reciprocated back and forth inthe casing from projected to retracted positions. The movement of thebolt is limited in both directions by stop shoulders9 formed thereon andcoacting with the guide 3.

The guide 3 which preferably constitutes an integral part of the lockcasing is provided with a key way 10 toaccommodate the key 11 which isinserted longitudinally there- 1n.

A group of pin tumblers each consisting of aligned and abutting sections12 and 14 is arranged'in a row transversely of the bolt 4, the tumblersbeing partially received within the bolt and partially within the guide3. The lower extremities of the tumblers are tapered as at 13, and uponinsertion of the appropriate key 11 the tumblers displaced against thetension of the springs 15 assume the position shown in Figs. 2 and 4 inwhich the line of division between the sections of the individualtumblers is flush with the surface of contact between the guide 3 andthe bolt 4, and the latter is thus free to be actuated by the crank arm'1". As will be understood, the several pin tumblers are composed ofsections of varying length so as to require the use of a key of suchirregular shape as to prevent an unauthorized person from tampering withthe lock and effecting unauthorized opening thereof.

According to the invention the bolt A is provided with duplicate groupsof tumbler sections 14 arranged a distance apart corresponding to theextent of movement of the bolt whereby in either of the two extremepositions of the latter one or the other group of the tumbler sectionsis in position to coact with the single group of tumbler sections 12 inthe guide 3 whereby to lock the bolt in either projected or retractedpositions.

In the modification of the invention illustrated in Figs. 57 inclusivethe lock is pro vided, in addition to the sliding bolt at, with anauxiliary sliding bolt or latch member 16 which is normally retained inprojected position by a spring 17 and may be manually withdrawn by meansof a handle 18 located externally of the casing 1.

According to this embodiment of the invention the inner extremity of thebolt 4: is pro vided with bifurcations 23 and 2st which embrace theguide 3, the spring 25 being interposed between the casing 1 and ashoulder on the bifurcation 2 1 whereby the bolt 4: is normally retainedin retracted position.

A member 19 is mounted for sliding movement between the shank of theauxiliary bolt 16 and the bifurcation 3 of the bolt 4. One extremity ofthe member 19 is slotted as at 8 to accommodate the crank arm 7 of thehandle shaft 6 whereby reciprocatory movement is imparted to the member19, through which latter movement is imparted to both of the bolts 4 and16 as will be hereinafter more fully described. 7 i

Along its top edge the bolt actuating memf ber 19is provided with a stoplug 21 engage,-

able with the stop lug 22 on the shank of the auxiliary bolt 16 when thecrank arm 7 is moved to its intermediate position, as shown in fulllines in Fig. 5. Upon rotation of the handle shaft 6 in a clockwisedirection the arm 7 shifts the member 19 to the position shown in dottedlines at the right of Fig. 5, and by engagement of the stop lug 21 withthe lug 22 the auxiliary bolt 16 is retracted against the tension of thespring 17 On its under side the bolt actuating member 19 is providedwith a stop shoulder 20 which is so disposed with respect to the stoplug 21 that when the crank arm 7 occupies the position shown in fulllines in Fig. 5 said shoulder is brought into engagement with theterminal of the bifurcation 23, and upon continued movement of the arm 7to the dotted line position shown at the left in Fig. 5 the main bolt 4is projected to the dotted line position, the stop lug 21 moving to theleft out of engagement with the lug 22.

The parts so far above described in connection with the form of theinvention shown in Figs. 5 and 6 constitute the actuating means for themain and auxiliary bolts 1 and 16. According to this embodiment of theinvention the guide 3 is provided with three or more key ways 10, 10 and10" which, as shown in Fig. 6, extend from one side to the other of thelock casing and arranged in a line with the corresponding number ofgroups of pin tumbler sections 12 arranged thereunder. Groups of tumblersections 1 1- are located in the bifurcation 24 in the main bolt 4 andare so disposed with respect to the tumbler sections 12 that when thebolt 4 is retracted and the keys withdrawn from the key ways 10, 10 and10, the several tumbler sections 12 and 12 act to lock the bolt inretracted position.

Additional groups of tumbler sections 1 1" are located in thebifurcation 2d and are so disposed that when the bolt 1 is projected thetumbler sections of the groups 12 lie in vertical line with the severalkey ways, and coacting with the tumbler sections 12 lock the bolt inprojected position.

In order to lock the bolt actuating member 19 against operation, anadditional group of tumbler pin sections 12 is located in vertical linewith the key way 10 which cooperate with the intermediate tumblersections 26 located in the bifurcation 23, the latter tumbler sectionsbeing engaged with the spring actuated sections 14 mounted in the boltactuated member 19. The member 19 and bifurcation .3 are provided withduplicate groups of tumbler sections 1% and 26 which in the two extremepositions of the main bolt 4 are moved into vertical line with the keyway 10, and coacting with the pin sections 12 lock the bolt 4 with theguide 3, as well as the bolt actuating member 19.

The type of key employed in connection with the key way 10 is providedalong both edges with recesses 29 adapted for cooperation with the twogroups of pin sections located above and below the key way 10. The keyis of such form that the tumbler sections and receiving recess thereinlocated on opposite sides of the longitudinal center of thatportion of tie key which enters the lock are symmetrically disposed so that the keymay be readily inserted through either end of the key way 10 at oppositesides of the lock, and in order to assure proper posi tioning of the keyin said way the guide rib 27 is preferably formed upon the key.

The key as shown in Fig. 6 is provided with recesses arranged inoppositely inclined rows or steps, but the form of the key may bechanged as desired and maybe of the form suggested in Fig. 7.

Under ordinary conditions when the bolt 4c is retracted the auxiliarybolt 16 acts as a catch and is retracted at will by turning the handleshaft 6 in a clockwise direction. When it is desired to project the bolt4, the shaft 6 is turned in a counter clockwise direction, the shoulder20 acting on the bifurcation 23 to project the main bolt 4, the lowergroups of tumbler sections 12 coacting with the tumbler sections of thegroup 14 to lock the bolt in projected position. Simultaneously thetumbler sections 12 above the key way 10 coacting with the sections 14;and 26 lock the actuating member 19 against movement, and the main bolt4 can only be restored to retracted position by inserting theappropriate key in each of the key ways 10, 10 and 10 whereupon the mainbolt is automatically retracted by the spring 25.

Having thus described and ascertained the nature of the presentinvention and the manner to realize it, I declare that what I claim asmy invention and exclusive right is:

1. In a lock, a casing, a guidemember therein, a bolt member engagedwith said guide member, a longitudinally movable bolt actuating memberengaged with the bolt member, and sectional pin tumblers, the sectionsof the tumblers being located in the actuating, bolt and guide membersand operable to lock both the actuating member and bolt member againstmovement with respect to the guide member.

2. In a look, a casing, a guide member therein, a bolt member engagedwith said guide member, a longitudinally movable bolt actuating memberengaged with the bolt member, and sectional pin tumblers, the sec--tions of the tumblers being located in the actuating, bolt and guidemembers and operable to lock both the actuating member and bolt memberagainst movement with respect to the guide member, and additionalsectional pin tumblers located partially within the guide member andpartially within the bolt member.

3. In a lock, a casing, a guide member therein, a bolt member engagedwith said guide member, a longitudinally movable bolt actuating memberengaged with the bolt member, and sectional pin tumblers, the sectionsof the tumblers being located in the actuating, bolt and guide membersand operable to lock both the actuating member and bolt member againstmovement with respect to the guide member, and an auxiliary bolt giemberalso actuated by said actuating mem- 4. In a lock, a casing, a guidetherein, a bolt having a bifurcated extremity slidably embracing theguide, the guide having a key way therein, and opposed groups ofsectional pin tumblers in line with said key Way and located partiallyWithin the guide and the opposite bifurcations of the bolt.

5. In a look, a casing, aguide member therein, a bolt member having abifurcated extremity slidably embracing the guide, the guide having akey way therein, a bolt actuating member overlying the bifurcatedextremity of the bolt member, and sectional pin tumblers disposed inline with the key way, the sections of the tumblers being located in theactuating, bolt and guide members.

6. In a look, a casing, a guide member therein, a bolt member having abifurcated extremity slidably embracing the guide, the guide having akey way therein, a longitudinally movable bolt actuating memberoverlying the bifurcated extremity of the bolt member, and sectional pintumblers disposed in line with the key way, the sect-ions of thetumblers being located in the actuating, bolt and guide members.

In testimony whereof I affix my signature.

ATILIO REBORI.

